The Shower Filter Replacement Cartridge for New Wave Enviro Products Premium or Designer Shower Filter, Provides a year of natural chlorine free shower water, Filter cartridge is easily replaced , it requires no tools or plumbing, , Just open the shower filter housing, remove the cartridge, and drop in the replacement, Size - 2, 5 x 3 x 2, 5 inches , Weight - 2 pounds SKU: NWVE004